Volunteer fire chief Peter Clements is calling for caution in the wake of two more grass fires at the weekend.

''It's pretty extreme out here, what with the late spring growth, but it's burned off now and people have to be so careful in what they do, " said chief fire officer Peter Clements of the Cust volunteer fire brigade, after two call-outs to grass fires at the weekend.

On Sunday the Cust brigade was called out to fight a fire in grass set alight by a ride-on mower in Davis Road about 1.15pm. This fire was put out after burning through around 50 square metres of grass.

And around 5.10pm on Saturday afternoon the Cust brigade was called out to Downs Road at Eyrewell Forest where a mower hit stones and started a fire which burned through four hectares of dried grass before it was controlled.

Mr Clements said people have to be careful in what they do outside.

"So often we have people say they didn't think what they were doing would start a fire, but it did.

"It's so dry here now that any fire will create a Selwyn-type one and there'll be no stopping that if it starts."

The Rangiora brigade was also called out, prepared to battle a vegetation fire in Swannanoa Road at Fernside during the weekend, but the 7.18pm call on Saturday was a false alarm.